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Sat, 07 Mar 2026 12:51:02 -0800 (PST) Received: from localhost ([189.99.238.164]) by smtp.gmail.com with ESMTPSA id 71dfb90a1353d-56b09a2614fsm6038280e0c.7.2026.03.07.12.51.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 Mar 2026 12:51:01 -0800 (PST) From: =?utf-8?q?Ricardo_B=2E_Marli=C3=A8re?= Subject: [PATCH net v4 0/4] {net,bpf}: nd_tbl fixes for when ipv6.disable=1 Date: Sat, 07 Mar 2026 17:50:52 -0300 Message-Id: <20260307-net-nd_tbl_fixes-v4-0-e2677e85628c@suse.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-B4-Tracking: v=1; b=H4sIAKyPrGkC/4XOwW7CMAwG4FdBORNInLIUTrzHNKE4cWgkSFFSq k2o747pBYQ27ejf/mzfRKWSqIrd4iYKjammPnPRLBfCdy4fSabAtQAFHwqglZkGmcNhwNMhpm+ q0lOrvdOkMIJgdik0N1h9Cp4WXxyiqySxuOy7xzaO12eX8mO+S3Xoy8/8wahn9fexUUslAcGBb ULcIu7rtdLK9+f5zAhPb9TmFw/s0WprA2q3jebNm/+8YR8DQYtGOds0L36apjvNlP65TwEAAA= = X-Change-ID: 20260228-net-nd_tbl_fixes-ce81ca1e0bf2 To: Martin KaFai Lau , Daniel Borkmann , John Fastabend , Stanislav Fomichev , Alexei Starovoitov , Andrii Nakryiko , Eduard Zingerman , Song Liu , Yonghong Song , KP Singh , Hao Luo , Jiri Olsa , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , =?utf-8?q?Toke_H=C3=B8iland-J=C3=B8rgensen?= , David Ahern , Jay Vosburgh , Andrew Lunn , Hangbin Liu Cc: Fernando Fernandez Mancera , bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Ricardo_B=2E_Marli=C3=A8re?= X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openssh-sha256; t=1772916658; l=1847; i=rbm@suse.com; h=from:subject:message-id; bh=6haq1LWJ2rMn7CiJy1QtMn8Y0nk+PfGJ1NB51Njj8RA=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgguRCc5X8/UX9M40lkMnr//aFGOhce x5ezt8MFNUFlqYAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QB5/qXUWK/NVELUIPP/zT+sFffR8F4SCUOdH+0tDnm9TxNZJ2GXSV7qA4OQUWERJEgdBNLxu1a9 GXK8EFF6QKQM= X-Developer-Key: i=rbm@suse.com; a=openssh; fpr=SHA256:pzhe0fJpYLz+3cZ33FFPhIfaUElk9CXPFFXmalIH+1g Hi, Please consider merging these four patches to fix three crashes that were found after this report: https://lore.kernel.org/all/CAHXs0ORzd62QOG-Fttqa2Cx_A_VFp=utE2H2VTX5nqfgs7LDxQ@mail.gmail.com The first patch from Jakub Kicinski is a preparation in order to enable the use ipv6_mod_enabled() even when CONFIG_IPV6=n. Thank you, - Ricardo. Signed-off-by: Ricardo B. Marlière --- Changes in v4: - Use preparatory patch from Jakub (thx!) - Use ipv6_mod_enabled() helper in all three patches - bonding: Move check to an earlier point - bond_rcv_validate() instead of bond_na_rcv() - Link to v3: https://lore.kernel.org/r/20260305-net-nd_tbl_fixes-v3-0-fde28b30a744@suse.com Changes in v3: - Don't use ipv6_mod_enabled() in net/core/filter.c. - Link to v2: https://lore.kernel.org/r/20260305-net-nd_tbl_fixes-v2-0-b7177db1a9f3@suse.com Changes in v2: - Used ipv6_mod_enabled() helper, guarded by unlikely(). - Link to v1: https://lore.kernel.org/r/20260228-net-nd_tbl_fixes-v1-0-2b2a274df9bb@suse.com --- Jakub Kicinski (1): ipv6: move the disable_ipv6_mod knob to core code Ricardo B. Marlière (3): net: bonding: Fix nd_tbl NULL dereference when IPv6 is disabled bpf: bpf_out_neigh_v4: Fix nd_tbl NULL dereference when IPv6 is disabled bpf: bpf_out_neigh_v6: Fix nd_tbl NULL dereference when IPv6 is disabled drivers/net/bonding/bond_main.c | 2 +- include/linux/ipv6.h | 7 ++++++- net/core/filter.c | 7 +++++++ net/ipv4/af_inet.c | 6 ++++++ net/ipv6/af_inet6.c | 8 -------- 5 files changed, 20 insertions(+), 10 deletions(-) --- base-commit: b824c3e16c1904bf80df489e293d1e3cbf98896d change-id: 20260228-net-nd_tbl_fixes-ce81ca1e0bf2 Best regards, -- Ricardo B. Marlière